Flat Roofs

Expert Flat Roofs in Southern California

Flat and low-slope roofs require specialized systems, drainage engineering, and waterproofing expertise that differ significantly from pitched roofing. Installed correctly, a flat roof can perform reliably for 20–30 years. Installed poorly, it fails within months. American Highland Roofing installs and maintains flat roofing systems for residential additions, commercial buildings, and mixed-use properties.

What to Expect from Our Process

Proper flat roof installation begins with drainage — ensuring the roof has adequate slope (minimum 1/4″ per foot) to move water toward drains, scuppers, or gutters. We assess existing drainage before selecting a membrane system. Our preferred systems — TPO and EPDM — are heat-welded at the seams to eliminate the adhesive failures that cause most flat roof leaks.

Signs You May Need Flat Roofs

• Standing water visible more than 48 hours after rain
• Membrane bubbling, blistering, or cracked surface
• Interior leaks with no obvious penetration source
• Seam separation visible on existing flat membrane
• Roof age approaching 20 years

Why Choose American Highland Roofing?

• Licensed C-39 Contractor — verifiable on the CSLB website. We pull all permits and work within California code on every project.
• Fully Insured — general liability and workers’ compensation on every job. You are protected if anything unexpected happens.
• Written Estimates — itemized, photo-documented, and delivered with no pressure. No verbal quotes, no bait-and-switch pricing.
• Workmanship Guarantee — backed by our signature and manufacturer warranties in writing before work begins.

Ready to get started? Request a free estimate online or call (951) 463-1512 — we serve all of Southern California.